# -*- coding: utf-8 -*-#python 27#xiaodeng#python之函数用法startswith()#http://www.runoob.com/python/att-string-startswith.html#startswith()#说明：返回布尔值,用于检查字符串是否是以指定子字符串开头，如果是则返回 True，否则返回 False。'''startswith(...)    S.startswith(prefix[, start[, end]]) -> bool    prefix:前缀    start：字符串的开始位置    end：字符串结束位置        Return True if S starts with the specified prefix, False otherwise.    With optional start, test S beginning at that position.    With optional end, stop comparing S at that position.    prefix can also be a tuple of strings to try.'''#案例#判断字符串是否以指定字符串开头str='xiaodeng love python'prefix='xiaodeng'print str.startswith(prefix)#Trueprefix='deng'print str.startswith(prefix,4)#Trueprefix='love'print str.startswith(prefix,4,13)#True